中国地质调查2019，Vol.6Issue(2)：34-41,8.DOI:10.19388/j.zgdzdc.2019.02.04
东昆仑纳赤台地区构造时空格架及成矿地质背景分析
Temporal-spatial framework of structure and geological background of mineralization of Nachitai area in East Kunlun Mountains
摘要
Abstract
Nachitai area is located in the middle part of East Kunlun metallogenic belt. In order to solve basic geology and mineral resources problems in this important metallogenic belt, 1:50 000 basic geological and mineral survey was conducted. The results show that strong strain zone and mylonitization zone are frequently alternate in the research area. The schistositized and mylonitized structures are common in the brittle-ductile shear zone, such as S-C fabrics, rotational porphyroclast and asymmetric folds. EW and NWW trending structures developed.The newly identified structural traces, combined with some newly discovered gold, copper, lead and zinc deposits and mineralization clues, are consistent with the majority of ore deposits, ore spots, and the occurrence of EW-NWW-toward linear tectonic belts in the region. This indicated a direct or indirect relationship between the mineralization and the structures. A closed relationship is shown between the EW and NWW structures and polymetallic deposits in time-space and genesis. Kunlun River ductile shear zone was formed in Late-Middle Silurian (432-423 Ma), which is similar to the newly discovered Erdaogou scheelite and Tongjinshan tungsten-tin ore in this reaserch area. This research shows that the potential of regional prospecting is great in this area.关键词
脆-韧性剪切带/构造与成矿/纳赤台地区/东昆仑成矿带Key words
brittle-ductile shear zone/structure and mineralization/Nachitai area/East Kunlun metallogenic belt分类
天文与地球科学引用本文复制引用
邓红宾,陈永东,杨鹏涛,姚波,官云彬,徐琳,孙萍..东昆仑纳赤台地区构造时空格架及成矿地质背景分析[J].中国地质调查,2019,6(2):34-41,8.基金项目
青海省自然资源厅地质勘查基金"青海省格尔木市格尔木河西地区J46E023018、J46E023019、J46E024018、J46E024019、I46E001019五幅 1: 5万区域地质矿产调查(编号: 青国土资矿[2011]277 号)"项目资助 （编号: 青国土资矿[2011]277 号）
